<code>linkConnectionPoint(linkView, view, magnet, reference)</code> - this function allows you to customize what are the sticky points of links. The function must return a point (with <code>x</code> and <code>y</code> properties) where the link sticks to the element.
                  The function takes the link view, element view, the magnet (SVG element) the link should stick to and a reference point (either the closest vertex or the sticky point on the other side of the link).
                              Note that there is a utility function <a href="#util.shapePerimeterConnectionPoint">shapePerimeterConnectionPoint</a> that can
                              be directly passed to the <code>linkConnectionPoint</code> parameter. This function tries to find
                              the best possible connection point right on the perimeter of the connected shapes. See the function
                              documentation for details.
                            